package com.college.oss.service.impl;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.college.oss.service.OssService;
import com.college.oss.utils.ConstantPropertiesUtil;
import org.joda.time.DateTime;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.InputStream;
import java.util.Date;
import java.util.UUID;

@Service
public class OssServiceImpl implements OssService {
    @Override
    public String uploadFileAvatar(MultipartFile file) {
        String endpoint = ConstantPropertiesUtil.END_POINT;
        ;
        String accessKeyId = ConstantPropertiesUtil.ACCESS_KEY_ID;
        String accessKeySecret = ConstantPropertiesUtil.ACCESS_KEY_SECRET;
        String bucketName = ConstantPropertiesUtil.BUCKET_NAME;

        try {
            // 创建OSSClient实例。
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

            // 获取上传文件的输入流
            InputStream inputStream = file.getInputStream();

            //获取文件名称
            String fileName = file.getOriginalFilename();

            //1、在文件名称里面添加随机唯一值
            //uuid
            String uuid = UUID.randomUUID().toString().replaceAll("-", "");
            fileName = uuid + fileName;

            //2、把文件按日期进行分类(使用工具类)
            String datePath = new DateTime().toString("yyyy/MM/dd");
            fileName = datePath + "/" + fileName;

            //调用oss方法实现上传
            //第一个参数：Bucket名称
            //第二个参数：上传到oss文件路径和文件名称
            //第三个参数：上传文件输入流
            ossClient.putObject(bucketName, fileName, inputStream);

            // 关闭OSSClient。
            ossClient.shutdown();
            //https://education-college.oss-cn-beijing.aliyuncs.com/wallhaven-j81z1p.jpg
            //把文件上传之后的路径返回
            String url = "https://" + bucketName + "." + endpoint + "/" + fileName;
            return url;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}
